// license:BSD-3-Clause // copyright-holders:Robbbert, Nigel Barnes /*************************************************************************** Acorn System 2, 3, 4, and 5 Acorn System 2: 6502, VDU 40x25, 4K RAM, 4K ROM (BASIC), Cassette http://chrisacorns.computinghistory.org.uk/Computers/System2.html Acorn System 3: 6502, VDU 40x25, 16K RAM, 4K ROM (BASIC), FDC (1 disc) http://chrisacorns.computinghistory.org.uk/Computers/System3.html Acorn System 3: 6809, VDU 40x25, 16K RAM, FDC (1 disc) http://chrisacorns.computinghistory.org.uk/8bit_Upgrades/Acorn_6809_CPU.html Acorn System 4: 6502, VDU 40x25, 16K RAM, FDC (2 discs) http://chrisacorns.computinghistory.org.uk/Computers/System4.html Acorn System 5: 6502A, VDU 80x25, 32K RAM, FDC http://chrisacorns.computinghistory.org.uk/Computers/System5.html TODO: - AY-3-4572 Keyboard Encoder for full keyboard support - 4K BASIC ROM is undumped for System 2/3 6809 Monitor Commands:- Modify memory: M - Modify starting at specified address MR - Modify registers MG - Modify from Go address MV - Modify from breakpoint address MP - Modify from saved Program counter Execute programs: G - Go to specified address P - Proceed from saved Program counter past specified number of breakpoints Debugging aids: R - Display registers V - Insert/delete breakpoint T - Trace one, or more, instructions . - Do trace, displaying register contents at each step Cassette interface: S - Save memory to named file L - Load named file, with optional offset F - Finish loading - no name search Printer interface: C - Copy to parallel printer Disk interface: D - Disk bootstrap ****************************************************************************/ #include "emu.h" #include "cpu/m6502/m6502.h" #include "cpu/m6809/m6809.h" #include "machine/ins8154.h" #include "machine/6522via.h" #include "machine/keyboard.h" #include "machine/input_merger.h" #include "bus/centronics/ctronics.h" #include "bus/acorn/bus.h" #include "softlist_dev.h" class acrnsys_state : public driver_device { public: acrnsys_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_irqs(*this, "irqs") , m_bus(*this, "bus") , m_ins8154(*this, "ins8154") , m_via6522(*this, "via6522") , m_centronics(*this, "centronics") , m_kbd_data(0) { } DECLARE_INPUT_CHANGED_MEMBER(trigger_reset); void a6502(machine_config &config); void a6809(machine_config &config); void a6502a(machine_config &config); void acrnsys2(machine_config &config); void acrnsys3(machine_config &config); void acrnsys3_6809(machine_config &config); void acrnsys4(machine_config &config); void acrnsys5(machine_config &config); protected: virtual void machine_start() override; virtual void machine_reset() override; private: void kbd_put(u8 data); void kbd_put_pb(u8 data); uint8_t kbd_r(); void bus_nmi_w(int state); void a6502_mem(address_map &map); void a6809_mem(address_map &map); void a6502a_mem(address_map &map); required_device m_maincpu; required_device m_irqs; required_device m_bus; optional_device m_ins8154; optional_device m_via6522; optional_device m_centronics; uint8_t m_kbd_data; }; void acrnsys_state::a6502_mem(address_map &map) { map.unmap_value_low(); map(0x0000, 0x03ff).ram(); map(0x0e00, 0x0e7f).mirror(0x100).rw(m_ins8154, FUNC(ins8154_device::read_io), FUNC(ins8154_device::write_io)); map(0xf000, 0xffff).rom().region("maincpu", 0); } void acrnsys_state::a6809_mem(address_map &map) { map.unmap_value_high(); map(0x0000, 0x03ff).ram(); map(0x0900, 0x090f).mirror(0xf0).m(m_via6522, FUNC(via6522_device::map)); map(0xf800, 0xffff).rom().region("maincpu", 0); } void acrnsys_state::a6502a_mem(address_map &map) { map.unmap_value_low(); map(0x0000, 0x07ff).ram(); map(0x0e00, 0x0e0f).mirror(0x1f0).m(m_via6522, FUNC(via6522_device::map)); map(0xe000, 0xffff).rom().region("maincpu", 0); } void acrnsys_state::machine_start() { save_item(NAME(m_kbd_data)); } void acrnsys_state::machine_reset() { m_kbd_data = 0x7f; } void acrnsys_state::bus_nmi_w(int state) { m_maincpu->set_input_line(INPUT_LINE_NMI, state); } INPUT_CHANGED_MEMBER(acrnsys_state::trigger_reset) { m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? CLEAR_LINE : ASSERT_LINE); if (newval) { machine().schedule_soft_reset(); } } /*************************************************************************** Acorn Keyboard - Part No. 400,013 ***************************************************************************/ static INPUT_PORTS_START( acrnsys ) //PORT_START("X0") //PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("L SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) //PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R SHIFT") PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) //PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SHIFT LOCK") PORT_CODE(KEYCODE_LALT) //PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL)) //PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x30, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') // //PORT_START("X1") //PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ESC") PORT_CODE(KEYCODE_TILDE) PORT_CHAR(UCHAR_MAMEKEY(ESC)) //PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('\"') //PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') //PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') //PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') //PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') //PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') // //PORT_START("X2") //PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') //PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') //PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') //PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') //PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') //PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') //PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') // //PORT_START("X3") //PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') //PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') //PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') //PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') //PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') //PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') // //PORT_START("X4") //PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') //PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') //PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') //PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') //PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(32) // //PORT_START("X5") //PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'') //PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') //PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') //PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') //PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') //PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') //PORT_START("X6") //PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') //PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') //PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') //PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') //PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED) // //PORT_START("X7") //PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') //PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') //PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') // //PORT_START("X8") //PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+') //PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') //PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED) // //PORT_START("X9") //PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR(':') PORT_CHAR('*') //PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("COPY") PORT_CODE(KEYCODE_TAB) PORT_CHAR(UCHAR_MAMEKEY(TAB)) // //PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("LINE FEED") PORT_CODE(KEYCODE_INSERT) PORT_CHAR(10) //PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('[') //PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("RETURN") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) //PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR(']') // //PORT_START("X10") //PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("DELETE") PORT_CODE(KEYCODE_DEL) PORT_CHAR(8) //PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('@') //PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(UTF8_UP) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR('^') //PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('\\') // //PORT_START("X11") //PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=') //PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED) // //PORT_START("X12") //PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED) //PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') // //PORT_START("CAPS") //PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("LOCK") PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) PORT_TOGGLE // //PORT_START("RPT") //PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("REPT") PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_MAMEKEY(RCONTROL)) PORT_START("BRK") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("BREAK") PORT_CODE(KEYCODE_F12) PORT_CHAR(UCHAR_MAMEKEY(F12)) PORT_CHANGED_MEMBER(DEVICE_SELF, acrnsys_state, trigger_reset, 0) INPUT_PORTS_END void acrnsys_state::kbd_put(uint8_t data) { data &= 0x7f; /* allow backspace to work */ if (data == 8) data = 0x7f; /* assert strobe */ m_kbd_data = data | 0x80; } uint8_t acrnsys_state::kbd_r() { uint8_t data = m_kbd_data; /* clear strobe */ m_kbd_data &= 0x7f; return data; } void acrnsys_state::kbd_put_pb(uint8_t data) { data &= 0x7f; /* allow backspace to work */ if (data == 8) data = 0x7f; m_via6522->write_pb0(BIT(data, 0)); m_via6522->write_pb1(BIT(data, 1)); m_via6522->write_pb2(BIT(data, 2)); m_via6522->write_pb3(BIT(data, 3)); m_via6522->write_pb4(BIT(data, 4)); m_via6522->write_pb5(BIT(data, 5)); m_via6522->write_pb6(BIT(data, 6)); /* assert strobe */ m_via6522->write_cb1(1); /* clear strobe */ m_via6522->write_cb1(0); } /*************************************************************************** 6502 CPU Board - Part No. 200,000 ***************************************************************************/ void acrnsys_state::a6502(machine_config &config) { M6502(config, m_maincpu, 24_MHz_XTAL / 12); /* 1MHz 6502 CPU */ m_maincpu->set_addrmap(AS_PROGRAM, &acrnsys_state::a6502_mem); INPUT_MERGER_ANY_HIGH(config, m_irqs).output_handler().set_inputline(m_maincpu, M6502_IRQ_LINE); INS8154(config, m_ins8154); //m_ins8154->in_a().set(FUNC(acrnsys_state::ins8154_pa_r)); //m_ins8154->out_a().set(FUNC(acrnsys_state::ins8154_pa_w)); m_ins8154->in_b().set(FUNC(acrnsys_state::kbd_r)); generic_keyboard_device &keyboard(GENERIC_KEYBOARD(config, "keyboard", 0)); keyboard.set_keyboard_callback(FUNC(acrnsys_state::kbd_put)); } /*************************************************************************** 6502A CPU Board - Part No. 200,005 ***************************************************************************/ void acrnsys_state::a6502a(machine_config &config) { M6502(config, m_maincpu, 24_MHz_XTAL / 12); /* 2MHz 6502A CPU */ m_maincpu->set_addrmap(AS_PROGRAM, &acrnsys_state::a6502a_mem); INPUT_MERGER_ANY_HIGH(config, m_irqs).output_handler().set_inputline(m_maincpu, M6502_IRQ_LINE); VIA6522(config, m_via6522, 4_MHz_XTAL / 4); m_via6522->readpa_handler().set(FUNC(acrnsys_state::kbd_r)); //m_via6522->cb2_handler().set(FUNC(acrnsys_state::cass_w)); m_via6522->irq_handler().set(m_irqs, FUNC(input_merger_device::in_w<0>)); generic_keyboard_device &keyboard(GENERIC_KEYBOARD(config, "keyboard", 0)); keyboard.set_keyboard_callback(FUNC(acrnsys_state::kbd_put)); } /*************************************************************************** 6809 CPU Board - Part No. 200,012 ***************************************************************************/ void acrnsys_state::a6809(machine_config &config) { MC6809(config, m_maincpu, 4_MHz_XTAL); m_maincpu->set_addrmap(AS_PROGRAM, &acrnsys_state::a6809_mem); INPUT_MERGER_ANY_HIGH(config, m_irqs).output_handler().set_inputline(m_maincpu, M6809_IRQ_LINE); VIA6522(config, m_via6522, 4_MHz_XTAL / 4); m_via6522->writepa_handler().set("cent_data_out", FUNC(output_latch_device::write)); m_via6522->ca2_handler().set("centronics", FUNC(centronics_device::write_strobe)); //m_via6522->cb2_handler().set(FUNC(acrnsys_state::cass_w)); m_via6522->irq_handler().set(m_irqs, FUNC(input_merger_device::in_w<0>)); CENTRONICS(config, m_centronics, centronics_devices, "printer"); m_centronics->ack_handler().set(m_via6522, FUNC(via6522_device::write_ca1)); m_centronics->busy_handler().set(m_via6522, FUNC(via6522_device::write_pa7)); output_latch_device &latch(OUTPUT_LATCH(config, "cent_data_out")); m_centronics->set_output_latch(latch); generic_keyboard_device &keyboard(GENERIC_KEYBOARD(config, "keyboard", 0)); keyboard.set_keyboard_callback(FUNC(acrnsys_state::kbd_put_pb)); } /*************************************************************************** MACHINE DRIVERS ***************************************************************************/ void acrnsys_state::acrnsys2(machine_config &config) { /* 6502 CPU Board */ a6502(config); /* Acorn Bus - 8 Slot Backplane */ ACORN_BUS(config, m_bus, 0); m_bus->set_space(m_maincpu, AS_PROGRAM); m_bus->out_irq_callback().set(m_irqs, FUNC(input_merger_device::in_w<1>)); m_bus->out_nmi_callback().set(FUNC(acrnsys_state::bus_nmi_w)); ACORN_BUS_SLOT(config, "bus1", m_bus, acorn_bus_devices, "8k"); // 0x2000-0x3fff ACORN_BUS_SLOT(config, "bus2", m_bus, acorn_bus_devices, "vdu40"); ACORN_BUS_SLOT(config, "bus3", m_bus, acorn_bus_devices, "cass"); ACORN_BUS_SLOT(config, "bus4", m_bus, acorn_bus_devices, nullptr); ACORN_BUS_SLOT(config, "bus5", m_bus, acorn_bus_devices, nullptr); ACORN_BUS_SLOT(config, "bus6", m_bus, acorn_bus_devices, nullptr); ACORN_BUS_SLOT(config, "bus7", m_bus, acorn_bus_devices, nullptr); /* Software lists */ SOFTWARE_LIST(config, "flop_list").set_original("acrnsys_flop"); SOFTWARE_LIST(config, "rom_list").set_original("acrnsys_rom"); } void acrnsys_state::acrnsys3(machine_config &config) { /* 6502 CPU Board */ a6502(config); /* Acorn Bus - 8 Slot Backplane */ ACORN_BUS(config, m_bus, 0); m_bus->set_space(m_maincpu, AS_PROGRAM); m_bus->out_irq_callback().set(m_irqs, FUNC(input_merger_device::in_w<1>)); m_bus->out_nmi_callback().set(FUNC(acrnsys_state::bus_nmi_w)); ACORN_BUS_SLOT(config, "bus1", m_bus, acorn_bus_devices, "8k"); // 0x2000-0x3fff ACORN_BUS_SLOT(config, "bus2", m_bus, acorn_bus_devices, "8k"); // 0xc000-0xdfff ACORN_BUS_SLOT(config, "bus3", m_bus, acorn_bus_devices, "vdu40"); ACORN_BUS_SLOT(config, "bus4", m_bus, acorn_bus_devices, "fdc"); ACORN_BUS_SLOT(config, "bus5", m_bus, acorn_bus_devices, nullptr); ACORN_BUS_SLOT(config, "bus6", m_bus, acorn_bus_devices, nullptr); ACORN_BUS_SLOT(config, "bus7", m_bus, acorn_bus_devices, nullptr); /* Software lists */ SOFTWARE_LIST(config, "flop_list").set_original("acrnsys_flop"); SOFTWARE_LIST(config, "rom_list").set_original("acrnsys_rom"); } void acrnsys_state::acrnsys3_6809(machine_config &config) { /* 6809 CPU Board */ a6809(config); /* Acorn Bus - 8 Slot Backplane */ ACORN_BUS(config, m_bus, 0); m_bus->set_space(m_maincpu, AS_PROGRAM); m_bus->out_irq_callback().set(m_irqs, FUNC(input_merger_device::in_w<1>)); m_bus->out_nmi_callback().set(FUNC(acrnsys_state::bus_nmi_w)); ACORN_BUS_SLOT(config, "bus1", m_bus, acorn_bus_devices, "8k"); // 0x0000-0x1fff ACORN_BUS_SLOT(config, "bus2", m_bus, acorn_bus_devices, "8k"); // 0x2000-0x3fff ACORN_BUS_SLOT(config, "bus3", m_bus, acorn_bus_devices, "8k"); // 0xc000-0xdfff ACORN_BUS_SLOT(config, "bus4", m_bus, acorn_bus_devices, "vdu40"); ACORN_BUS_SLOT(config, "bus5", m_bus, acorn_bus_devices, "cass"); ACORN_BUS_SLOT(config, "bus6", m_bus, acorn_bus_devices, "fdc"); ACORN_BUS_SLOT(config, "bus7", m_bus, acorn_bus_devices, nullptr); /* Software lists */ SOFTWARE_LIST(config, "flop_list").set_original("acrnsys_flop"); } void acrnsys_state::acrnsys4(machine_config &config) { /* 6502 CPU Board */ a6502(config); /* Acorn Bus - 14 Slot Backplane */ ACORN_BUS(config, m_bus, 0); m_bus->set_space(m_maincpu, AS_PROGRAM); m_bus->out_irq_callback().set(m_irqs, FUNC(input_merger_device::in_w<1>)); m_bus->out_nmi_callback().set(FUNC(acrnsys_state::bus_nmi_w)); ACORN_BUS_SLOT(config, "bus1", m_bus, acorn_bus_devices, "8k"); // 0x2000-0x3fff ACORN_BUS_SLOT(config, "bus2", m_bus, acorn_bus_devices, "8k"); // 0xc000-0xdfff ACORN_BUS_SLOT(config, "bus3", m_bus, acorn_bus_devices, "vdu40"); ACORN_BUS_SLOT(config, "bus4", m_bus, acorn_bus_devices, "fdc"); ACORN_BUS_SLOT(config, "bus5", m_bus, acorn_bus_devices, nullptr); ACORN_BUS_SLOT(config, "bus6", m_bus, acorn_bus_devices, nullptr); ACORN_BUS_SLOT(config, "bus7", m_bus, acorn_bus_devices, nullptr); ACORN_BUS_SLOT(config, "bus8", m_bus, acorn_bus_devices, nullptr); ACORN_BUS_SLOT(config, "bus9", m_bus, acorn_bus_devices, nullptr); ACORN_BUS_SLOT(config, "bus10", m_bus, acorn_bus_devices, nullptr); ACORN_BUS_SLOT(config, "bus11", m_bus, acorn_bus_devices, nullptr); ACORN_BUS_SLOT(config, "bus12", m_bus, acorn_bus_devices, nullptr); ACORN_BUS_SLOT(config, "bus13", m_bus, acorn_bus_devices, nullptr); /* Software lists */ SOFTWARE_LIST(config, "flop_list").set_original("acrnsys_flop"); SOFTWARE_LIST(config, "rom_list").set_original("acrnsys_rom"); } void acrnsys_state::acrnsys5(machine_config &config) { /* 6502A CPU Board */ a6502a(config); /* Acorn Bus - 7 Slot Backplane */ ACORN_BUS(config, m_bus, 0); m_bus->set_space(m_maincpu, AS_PROGRAM); m_bus->out_irq_callback().set(m_irqs, FUNC(input_merger_device::in_w<1>)); m_bus->out_nmi_callback().set(FUNC(acrnsys_state::bus_nmi_w)); ACORN_BUS_SLOT(config, "bus1", m_bus, acorn_bus_devices, "32k"); // 32K ACORN_BUS_SLOT(config, "bus2", m_bus, acorn_bus_devices, "32k"); // 16K ACORN_BUS_SLOT(config, "bus3", m_bus, acorn_bus_devices, "vdu80"); ACORN_BUS_SLOT(config, "bus4", m_bus, acorn_bus_devices, "fdc"); ACORN_BUS_SLOT(config, "bus5", m_bus, acorn_bus_devices, "econet"); ACORN_BUS_SLOT(config, "bus6", m_bus, acorn_bus_devices, nullptr); /* Software lists */ SOFTWARE_LIST(config, "flop_list").set_original("acrnsys_flop"); SOFTWARE_LIST(config, "rom_list").set_original("acrnsys_rom"); } /*************************************************************************** ROM definitions ***************************************************************************/ ROM_START( acrnsys2 ) ROM_REGION(0x1000, "maincpu", 0) ROM_LOAD("syscos40.ic7", 0x0800, 0x0800, BAD_DUMP CRC(af457ccc) SHA1(c8c1fbfb8d2e8aa0fdf8e3dc80993ad404cc943d)) // Acorn COS (no known dump, this is re-created from source) ROM_END ROM_START( acrnsys3 ) ROM_REGION(0x1000, "maincpu", 0) ROM_LOAD("tosdos-s3.ic7", 0x0000, 0x1000, CRC(9b1fbec4) SHA1(4cb322dadcfba9c452797d6cc2096f0c92e8792c)) // Acorn DOS ROM_END ROM_START( acrnsys3_6809 ) ROM_REGION(0x1000, "maincpu", 0) ROM_LOAD("acorn6809.ic4", 0x0000, 0x0800, CRC(5fa5b632) SHA1(b14a884bf82a7a8c23bc03c2e112728dd1a74896)) ROM_REGION(0x100, "proms", 0) ROM_LOAD("acorn6809.ic11", 0x0000, 0x0100, CRC(7908317d) SHA1(e0f1e5bd3a8598d3b62bc432dd1f3892ed7e66d8)) // address decoder ROM_END #define rom_acrnsys4 rom_acrnsys3 ROM_START( acrnsys5 ) /* 6502A CPU board can take 4K, 8K, 16K ROMs */ ROM_REGION(0x2000, "maincpu", 0) /* References suggest models 5A-5E also exist, this is 5F */ ROM_LOAD("sys5f_iss1.ic11", 0x0000, 0x2000, CRC(cd80418d) SHA1(e588298239b5360b5d1e15d5cd9f7fe2b1693e5d)) // 201,625 ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ COMP( 1980, acrnsys2, acrnsys3, 0, acrnsys2, acrnsys, acrnsys_state, empty_init, "Acorn", "Acorn System 2", MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE ) COMP( 1980, acrnsys3, 0, 0, acrnsys3, acrnsys, acrnsys_state, empty_init, "Acorn", "Acorn System 3 (6502 CPU)", MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE ) COMP( 1980, acrnsys3_6809, acrnsys3, 0, acrnsys3_6809, acrnsys, acrnsys_state, empty_init, "Acorn", "Acorn System 3 (6809 CPU)", MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE ) COMP( 1980, acrnsys4, acrnsys3, 0, acrnsys4, acrnsys, acrnsys_state, empty_init, "Acorn", "Acorn System 4", MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE ) COMP( 1982, acrnsys5, 0, 0, acrnsys5, acrnsys, acrnsys_state, empty_init, "Acorn", "Acorn System 5", MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE )